TM  5-2815-241-34&P FUEL INJECTOR - CONTINUED ACTION LOCATION ITEM REMARKS INSPECTION  -  CONTINUED 17. Injector  adapter  (1) Orifice  plug  (2) and  cup  retainer threads  (3) a. Inspect  orifice  plug  for  burrs. If  burrs  exist,  replace  Injector adapter. b. Inspect  cup  retainer  threads  for damage. If  damage  exists,  replace  Injector adapter. c. Inspect  O-ring  and  gasket  grooves  (4) for nicks or burrs that could damage O- ring  or  gaskets  during  installation. If  nicks  or  burrs  exist,  replace  injector adapter. d. Inspect  both  fuel  passages  (5). Make  sure  fuel  passages  are  open,  If fuel  passages  are  plugged,  see general   cleaning   procedures (page  2-3). e. Using  a  lapping  plate  and  cutting  fluid, lap slightly to check barrel mating sur- face  (6)  for  nicks  or  burrs. If  nicks  or  burrs  exist,  replace  injector adapter. T A    2 4 2 5 8 1 2-362